package com.wzy.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.wzy.reggie.common.BaseContext;
import com.wzy.reggie.common.CustomException;
import com.wzy.reggie.entity.*;
import com.wzy.reggie.mapper.OrderMapper;
import com.wzy.reggie.service.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrderDetailService orderDetailService;
    /**
     * 用户下单
     * @param orders
     */
    @Override
    @Transactional
    public void submit(Orders orders) {
        log.info("orders:{}",orders);
        //获得当前的id
        Long userId = BaseContext.getCurrentId();
        //查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCartList = shoppingCartService.list(queryWrapper);
        if(shoppingCartList==null || shoppingCartList.size() == 0){
            throw new CustomException("购物车不能为空！！");
        }
        //查询用户数据
        User user = userService.getById(userId);
        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if(addressBook==null){
            throw new CustomException("地址为空！！");
        }
        //向订单表插入数据 一条数据 除了页面传来的三个数据，其他都要自己设置
        long id = IdWorker.getId();//利用mybatis-plus工具生成订单编号
        orders.setNumber(String.valueOf(id));

        AtomicInteger amount = new AtomicInteger();
        List<OrderDetail> orderDetails = shoppingCartList.stream().map((item)->{
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(id);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return  orderDetail;
        }).collect(Collectors.toList());

        orders.setId(id);//订单id
        orders.setOrderTime(LocalDateTime.now()); //下单时间
        orders.setCheckoutTime(LocalDateTime.now());//结账时间
        orders.setStatus(2);//订单状态
        orders.setAmount(new BigDecimal(amount.get()));//订单金额
        orders.setUserId(userId);//顾客id
        orders.setUserName(user.getName());//顾客名字
        orders.setConsignee(addressBook.getConsignee());//收货人
        orders.setPhone(addressBook.getPhone());//收货人手机号
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                            +(addressBook.getCityName() == null ? "" : addressBook.getCityName())
                            +(addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                            +(addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        this.save(orders);
        //向订单明细表插入数据
        orderDetailService.saveBatch(orderDetails);
        //清空购物车
        shoppingCartService.remove(queryWrapper);
    }
}
